UBUNTU-CVE-2026-118673

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Source
https://ubuntu.com/security/CVE-2026-118673
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-118673
Upstream
Published
2026-10-30T00:00:00Z
Modified
2026-10-31T03:30:07Z
Severity
  • 4.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

KeePassXC is a cross-platform community-driven port of the Windows application KeePass Password Safe. From 2.3.0 until 2.8.0, KeePassXC browser integration encrypts authorized responses in src/browser/BrowserMessageBuilder.cpp using a fixed 1 MiB output vector even though Botan::Sodium::crypto_box_easy() writes the plaintext length plus crypto_box_MACBYTES. A browser-protocol client that can access the per-user IPC endpoint, has a valid database association, and causes an unlocked database to generate and encrypt a sufficiently large authorized response can trigger a sequential out-of-bounds write before any response is delivered. This issue is fixed in version 2.8.0.

References

Affected packages

Ubuntu:18.04:LTS
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.2.2-1
2.2.3+dfsg.1-1
2.2.4+dfsg.1-1
2.3.0+dfsg.1-0ubuntu2
2.3.1+dfsg.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.3.1+dfsg.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"
Ubuntu:20.04:LTS
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.4.3+dfsg.1-1
2.4.3+dfsg.1-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.4.3+dfsg.1-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"
Ubuntu:22.04:LTS
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.6.6+dfsg.1-1~exp1
2.6.6+dfsg.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.6.6+dfsg.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"
Ubuntu:24.04:LTS
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.7.4+dfsg.1-2
2.7.6+dfsg.1-1
2.7.6+dfsg.1-1build2
2.7.6+dfsg.1-1build3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.7.6+dfsg.1-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"
Ubuntu:26.04:LTS
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.7.10+dfsg1-1
2.7.10+dfsg1-2
2.7.10+dfsg1-2ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.7.10+dfsg1-2ubuntu1"
        },
        {
            "binary_name":  "keepassxc-full",
            "binary_version":  "2.7.10+dfsg1-2ubuntu1"
        },
        {
            "binary_name":  "keepassxc-minimal",
            "binary_version":  "2.7.10+dfsg1-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"
Ubuntu:26.10
keepassxc

Package

Name
keepassxc
Purl
pkg:deb/ubuntu/keepassxc?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.7.10+dfsg1-2ubuntu1
2.7.10+dfsg1-2.1
2.7.10+dfsg1-2.1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "keepassxc",
            "binary_version":  "2.7.10+dfsg1-2.1build1"
        },
        {
            "binary_name":  "keepassxc-full",
            "binary_version":  "2.7.10+dfsg1-2.1build1"
        },
        {
            "binary_name":  "keepassxc-minimal",
            "binary_version":  "2.7.10+dfsg1-2.1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118673.json"